When pigs fly
what is it will never happen
to cost an arm and a leg
what is very expensive
a piece of cake
what is very easy
let the cat out of the bag
what is to tell a secret
to feel under the weather
what is feeling sick
break the ice
what is to get a conversation going
see eye to eye
what is agreeing with someone
a dime a dozen
what is very common
beat around the bush
what is to avoid saying something
your guess is as good as mine
what is I don't know either
to kill two birds with one stone
what is to solve two problems at once
once in a blue moon
what is an event that happens infrequently
better late than never
what is better to do it late than never at all
cut them some slack
what is to give them a break
blessing in disguise
what is Something that seems bad but provides some benefit
the best of both worlds
what is to enjoy two different opportunities at the same time
to cut corners
what is to do something cheaply or poorly
get out of hand
what is being out of control
burn bridges
what is to do something or anger someone to where you cannot go back
add fuel to the fire
what is to make a situation worse
Speak of the devil
what is the person you are talking about actually appears
back against the wall
what is being forced to do something you don't want to
wrap one's head around something
what is to understand something
fish out of water
what is unfamiliar or uncomfortable place
go the extra mile
what is to put an extra effort